News tagged with radiation
Exploring Mars in the Austrian Alps
In the largest ice caves on Earth, spacesuits and remote-controlled planetary rovers were for the first time tested in a five-day odyssey in the Alps designed to mimic potential future missions on Mars.
Space & Earth / Space Exploration
Jun 01, 2012 |
5 / 5 (1) |
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Mars methane linked to meteorites
Tiny amounts of methane in the Martian atmosphere may come not from living things, but from meteorites on the red planet's surface, the latest findings suggest.
Space & Earth / Space Exploration
May 31, 2012 |
4.7 / 5 (3) |
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Building 45 payloads for balloon mission
Robyn Millan's lab is a little crowded at the moment. It overflows with electronics. And foam. And parachutes and aluminum frames and drills. Based at Dartmouth College in Hanover, NH, Millan and her students ...
Space & Earth / Space Exploration
May 30, 2012 |
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Japan firm unveils radiation-gauging smartphone
Mobile phone operator Softbank on Tuesday unveiled a smartphone that can measure radiation as consumers in Japan clamour for reassurance following last year's Fukushima nuclear disaster.
Electronics / Consumer & Gadgets
May 29, 2012 |
5 / 5 (2) |
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Sensing the infrared: Researchers improve infrared detectors using single-walled carbon nanotubes
(Phys.org) -- Whether used in telescopes or optoelectronic communications, infrared detectors must be continuously cooled to avoid being overwhelmed by stray thermal radiation. Now, a team of researchers from ...
May 23, 2012 |
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Fukushima radiation mostly within accepted levels: WHO
Radiation affecting residents in Japan's Fukushima prefecture since the nuclear plant disaster is below the reference level for public exposure in all but two areas, the World Health Organization said Wednesday.
May 23, 2012 |
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Researchers uncover how plant skin is assembled
(Phys.org) -- For the first time, scientists have identified how a plant's skin is assembled.
May 22, 2012 |
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The new world of gamma-ray optics
Scientists discover that certain materials like silicon or gold exhibit a surprisingly large refractive index for extremely high energetic gamma-rays.
May 14, 2012 |
5 / 5 (6) |
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Photonics: strong vibrations
A new approach to generating terahertz radiation will lead to new imaging and sensing applications. The low energy of the radiation means that it can pass through materials that are otherwise opaque, opening ...
May 10, 2012 |
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Hubble observes a dwarf galaxy with a bright nebula
(Phys.org) -- The NASA/ESA Hubble Space Telescope has made detailed observations of the dwarf galaxy NGC 2366. While it lacks the elegant spiral arms of many larger galaxies, NGC 2366 is home to a bright, ...
May 10, 2012 |
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Performance boost for microchips
The semiconductor industry is faced with the challenge of supplying ever faster and more powerful chips. The Next-Generation Lithography with EUV radiation will help meeting that challenge. Fraunhofer researchers ...
May 10, 2012 |
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Screening for breast cancer without X-rays: Lasers and sound merge in promising diagnostic technique
X-ray mammography is an important diagnostic tool in the fight against breast cancer, but it has certain drawbacks that limit its effectiveness. For example, it can give in false positive and negative results; ...
May 07, 2012 |
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Climatic effects of a solar minimum
An abrupt cooling in Europe together with an increase in humidity and particularly in windiness coincided with a sustained reduction in solar activity 2800 years ago. Scientists from the German Research Centre for Geosciences ...
Space & Earth / Earth Sciences
May 06, 2012 |
4.5 / 5 (13) |
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Stream temperatures don't parallel warming climate trend
A new analysis of streams in the western United States with long-term monitoring programs has found that despite a general increase in air temperatures over the past several decades, streams are not necessarily warming at ...
May 02, 2012 |
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Proteomics identifies targets of ionizing radiation in a human skin model
(Phys.org) -- How better to find out what effect ionizing radiation has on human skin than by using the real thing? Researchers at Pacific Northwest National Laboratory did that by performing a quantitative ...
Apr 24, 2012 |
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Radiation
In physics, radiation describes any process in which energy emitted by one body travels through a medium or through space, ultimately to be absorbed by another body. Non-physicists often associate the word with ionizing radiation (e.g., as occurring in nuclear weapons, nuclear reactors, and radioactive substances), but it can also refer to electromagnetic radiation (i.e., radio waves, infrared light, visible light, ultraviolet light, and X-rays) which can also be ionizing radiation, to acoustic radiation, or to other more obscure processes. What makes it radiation is that the energy radiates (i.e., it travels outward in straight lines in all directions) from the source. This geometry naturally leads to a system of measurements and physical units that are equally applicable to all types of radiation.
For more information about Radiation, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
